BY N. A. COBB. 407 



the numerous long and delicate hairs that occur throughout the 

 length of the body ; these hairs are about three-fourths as long as 

 the greatest diameter of the body. The thin cuticle is transversely 

 striated. The neck is conoid, and ends in a slightly expanded trun- 

 cate head, which bears ten setae, each about one-third as long as the 

 head is wide, those of the submedian pairs being a little unequal in 

 size. Each of the six large confluent lips bears a single minute 

 papilla. The circular lateral organs, one-third as wide as the head, 

 are situated at a distance from the anterior extremity equal to twice 

 the width of the head. Eyes are lacking. The large pharynx is 

 pretty nearly balloon-shaped. The cylindroid oesophagus is one- 

 half to two-thirds as wide as the neck, the lining appearing sinuous 

 when seen in optical section. The brownish intestine is two-thirds 

 as wide as the body, and the cells of which it is composed contain 

 granules which are so arranged as to give rise to an obscure 

 tessellation. The length of the curved rectum is equal in the 

 female to the anal body-diameter. The nature of the ventral 

 gland remains unknown, but the ventral pore, its outlet, is situated 

 opposite the posterior border of the lateral organs. The tail is 

 conoid from the depressed anus, and ends in a rounded outlet for 

 the secretion of the caudal glands. The vulva is large, and near 

 it lies a large transparent organ, most likely a glandular structure ; 

 the oblique vagina is one-half as long as the body is wide. The 

 eggs are elongated, — somewhat longer than the body is wide, and 

 less than half as wide as long. There appears to be no posterior 

 branch to the female sexual apparatus. 



•8 8- 20- — M 90- 



pg— 2^ 2l ¥6 ¥2 I'Si^ni- The male tail resembles that of the 

 female, except that the anus is elevated ; the whole posterior part 

 of the male is inclined to be ventrally arcuate or even coiled. 

 The two equal pointed linear spicula are arcuate in the middle, and 

 present proximal ends cephaloid by expansion and bent dorsally ; 

 they are somewhat less than twice as long as the anal body- 

 diameter. The accessory pieces are of the kind presenting a 

 backward pointing process, which here seems, when seen in 

 profile, to lie at an angle of forty-five degrees with the body axis, 

 and to extend somewhat more than half-way across the body. 



